Loom harness



J. J. KAUFMANN Aug. 2, 1949.

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iiniented Aug. 2, 1949 LOOM HARNESS John Jacob Kaufmann, Elkins Park, Pa., assign or to Steel Heddle Manufacturing Company, Philadelphia, Pa., a corporation of Pennsyb' vania Application December 18, 1945, Serial No. 635,719

3 Claims. (0l. 139-96) This invention relates to 100m harness, and it relates more particularly to the heddles used in that type of loom harness in which the warp is in- Sorted in the eyes of the heddles by means of automatic warp drawing-in machines, which are now in more or less common use.

In many of the modern textile mills automatic drawing-in machines are used for the purpose of entering the warp but, as is well known to those familiar with such apparatus, it is not possible to use in such installations loom harness frames heddles of the ordinary kind in which hook members of the usual types are employed for supporting the heddle rods in the frames intermediate their ends. Such Ebooks form obstructions which interfere with the free manipulation of the heddles on the heddle supporting rods by the selector mechanism of the drawing-in machines.

By reason of the foregoing forms of heddle frames have been developed in which the heddles are permitted entire freedom of movement on the rods from one end to the other. One of the more successful of such forms of loom harness installations is shown in my previous Letters Patent No. 2,047,511, dated July 14, 1936. 'I'he heddles 'shown in Figs. 2 and 3 of the drawings of said Letters Patent have, in the main, been found in practice to be quite satisfactory.

However, in the use of heddles of the aforesaid type it has been found that, due to carelessness of the loom xers and the weavers, it sometimes occurs that the heddles are notV permitted the requisite freedom of movement vertically, when the shedding takes place, by reason of failure to adjust the heddle supporting rods to the proper parallelism throughout their respective lengths, and as a result that the end portions of certain of the iheddles Will be broken oil", thereby causing stoppages as well as defects in the weave.

The principal object of the present invention is to provide an improved form of heddle of the type adapted to be used in installations in which the warp is inserted by means of the automatic drawing-in machines.

A further object of the invention is to provide' heddles, of the character aforesaid, which are so constructed and arranged that likelihood of breakage of the heddles at the ends thereof will be reduced to a A further object of the invention is to provide heddles, of the character aforesaid,'which are so constructed and arranged that the useful life of the same will be considerably extended.

The nature and characteristic features of the the following description, taken in connection with the accompanying drawings forming part hereof, inwhich:

Figure 1 is a fragmentary elevational view il- Iustrating, in front elevation, a group of heddles mounted upon supporting rods, which heddles embody the main features of the present invention; y

Fig. 2 is a view similar to Fig. 1, but looking from the opposite side thereof;

Fig. 3 is a front elevation, enlarged, of the upper portion of one of the heddles shown in Figs. 1 and 2 of the drawings;

Fig. 4 is a side elevation of the portion of the heddle shown in Fig. 3;

5 is a view similar to Fig. 3, but of the lower portion 'of one of the heddles; and

Fig. 6 is a side elevation of the portion of the heddle shown in Fig. 5.

It should, of course, be understood that the description and drawings herein are illustrative merely, and that various' modifications and changes may be made in the structure disclosed without departing from the spirit of the invention.

Referring tothe drawing, in the particular embodiment of the invention therein shown, each of the heddles l0 is. in most respects, substantially similar to that shown in Figs. 2 and 3 of the drawings of my previous Letters Patent No. 2,047,511 hereinbefore referred to. In the present instance the heddles Ill are preferably made, like those above referred to, from thin flat strips of metal of a width corresponding to the widest portion of the :'heddle, and the central portion Il of each heddle is preferably left the full width of the strip, as is also each end portion I2 thereof, but the parts I3 of the heddle, between the central portion Il and the respective end portions l2 are sheared down to a considerably narrower y width, principally for the purpose of reducing the weight and to facilitate the manipulation of the heddles in the drawing-in operation.

'I'he central portion Il of each heddle is provided with the usual punched and formed warp eye Il. the shanks of which may, if desired, be formed in reversed bowed conformation out of the main plane of the heddle proper. The central portion Il may also be provided with the usual keyhole slot (not shown) or other means for engagement by the selector mechanism of the warp drawing-in machine, all the foregoing as shown and explained in my previous Letters Patent aforesaid.

invention will be more readily understood from 66 Each of the end portions l2 of each of the heddles I shown in the drawing is as hereinbefore mentioned, left the full width of the strip from which the heddle is formed. Each of said end portions I2 is punched out to provide a slot I5 for mounting the heddles on the rods, and the portion on one side of said slot I5 is cut away as at I6, substantially midway the extension of the slot I5, so that when the heddles are slid sidewlse on the rods they may pass freely, without being obstructed by means for supporting the rods indue strain is imparted to the heddle, to relieve` the tension through the elasticity provided by tl bowed portion I9.

It has been found in practice that the provision of the bowed portions I9, in the solid sides I1 of the end portions I2 of the heddles, will eiectively serve to prevent,.lbreakage at the ends of the heddles whenever the same are subjected to undue strain, and heddles constructed as herein shown and described will have considerably longer life even under proper conditions of use.

I claim:

1. Heddles for loom harness made of thin fiat strips of metal each having a slot at each end for mounting said heddles on the supporting rods, the metal on one side of at least one of said slots 1ying in the main plane of the heddle-and having a centrally disposed opening of an extent suicient to permit the heddles to ,pass means for supporting the heddle rods intermediate their ends, and the metal on the opposite side being bent out of the main plane of the heddle thereby to provide longitudinal resiliency at each end of the heddle to relieve the strain thereon when the shedding takes place.

strips of metal each having a slot at each end for mounting said heddles on the supporting rods. the metal on one side of each slot lying in the main plane of the heddle and having a centrally disposed opening of an extent sumcient to permit the heddles to pass means for supporting the heddle rods intermediate their ends, and the metal on the opposite side being bent out of the main plane-of the heddle in an elongated bow shape thereby to provide longitudinal resiliency at each end of the heddle to relieve the strain thereon when the shedding takes place.

3. Heddles for loom harness made of thin iiat strips of metal each having side portions cut away for the greater portions of their length, .fbut being of the full width of the strips at the top and bottom portions, the top and bottom portions of the strips each having a slot for mounting the heddles on supporting rods and the metal on one side of each of said slots lying in the main plane of the heddle and having an opening of an extent suflcient to permit the heddles to pass means for supporting the heddle rods intermediate their ends, and the metal on the opposite sides being bent in bowed formation out of the main plane of the heddle thereby to provide longitudinal resiliency at each end of the heddle to relieve against undue stress thereof.

JOHN JACOB KAUFMNN.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS 

